Two problems related to engine oil leaking have been reported for the 1998 Buick Park Avenue. The most recently reported issues are listed below.
Greetings, I procured a car from the twin city Buick dealership on 3046 airport highway [alcoa TN 37701] to purchase a nice used car for my son. The salesman, was nice enough to show me / steer me in the direction of a 1998 Buick park Ave with 30k original miles. We ran a background check on the miles and car history report and with a handshake called the deal done. My son used the car for one year and put about 10k miles on the vehicle he noticed that the temperature gauge was getting a little warmer than normal. The car was checked out at clifton Buick dealership in rockwood tennessee my son was at summer camp in rockwood tennessee as a boy scout leader for the last two summers and it was discovered that the plenum gasket device was defective. In addition, anti-freeze was discovered leaking into the engine as well. The bill to get ben's car back on the road was in $568. 06 about two weeks later the engine light came back on and I had to go back to the dealership. It was a faulty sensor discovered and most likely attributed to the anti-freeze leaking through the tailpipe as was suggested by the dealer. This cost was $315. 66. Finally, about a week goes by and now the oil light came on. Again we are at the dealer and discovered it was not the anti-freeze but damage to the engine from the plenum issue. The cost to trouble-shoot the car was $82. 60. Additional detail provided by the dealer is $3,360. 00 to replace the engine with a used engine that has 68k miles and 1 year warranty or $4,453. 00 to replace the engine with a rebuilt one that has a 3 year 100k mile warranty. The dealership recommended the rebuilt one. Updated 12/12/07.
1998 Buick Park Avenue. Consumer requests reimbursement for repairs made to vehicle the consumer stated the vehicle began leaking oil on July 3, 2006. The dealer removed and replaced the intake gasket. On July 9, 2009 the catalytic converter and thermostat were replaced at a cost of $ 395. 91. Two months later the same problem resurfaced.